Honda CR-V: Emissions Controls

The burning of gasoline in your vehicle’s engine produces several byproducts.

Some of these are carbon monoxide (CO), oxides of nitrogen (NOx), and hydrocarbons (HC).

Gasoline evaporating from the tank also produces hydrocarbons. Controlling the production of NOx, CO, and HC is important to the environment.

Under certain conditions of sunlight and climate, NOx and HC react to form photochemical ‘‘smog.’’ Carbon monoxide does not contribute to smog creation, but it is a poisonous gas.

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 The Clean Air Act

The United States Clean Air Act* sets standards for automobile emissions. It also requires that automobile manufacturers explain to owners how their emissions controls work and what to do to

 Crankcase Emissions Control System

Your vehicle has a positive crankcase ventilation system. This keeps gasses that build up in the engine’s crankcase from going into the atmosphere. The positive crankcase ventilation valve

 Evaporative Emissions Control System

As gasoline evaporates in the fuel tank, an evaporative emissions control canister filled with charcoal adsorbs the vapor. It is stored in this canister while the engine is off. After the en

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 To Play a Disc

To load or play discs, the ignition switch must be in the ACCESSORY (I) or ON (II) position. You operate the disc changer with the same controls used for the radio. To select the disc changer, press the CD button (CD/AUX button on models with satellite radio), the disc and track number

 DTC 51: Motor Locked

1. Turn the ignition switch ON (II). 2. Clear the DTC with the HDS. 3. Test-drive the vehicle. Drive the vehicle at 10 mph (15 km/h) or more, with the engine speed at 2,500 rpm or more. 4. Check for DTCs with the HDS. Is DTC 51 indicated? YES-Replace the VSA modulator-control unit. NO-Intermitt

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